Returns measured from each activist filing's date_of_event, split + dividend adjusted via Yahoo Finance.
| Filed | Form | Filer | Stake | Shares | Intent | |
|---|---|---|---|---|---|---|
| 2026-10-09 | SCHEDULE 13D/A | Fairmount Funds Management LLC | 9.99% | 9,354,200 | view → | |
| 2026-10-01 | SCHEDULE 13G | Paradigm Biocapital Advisors LP | — | — | view → | |
| 2026-06-23 | SCHEDULE 13D/A | Fairmount Funds Management LLC | — | 8,835,440 | view → | |
| 2023-12-11 | SC | Fairmount Funds Management LLC | — | — | view → | |
| 2022-02-10 | SC | BAKER BROS. ADVISORS LP | — | — | view → | |
| 2021-03-19 | SC | BAKER BROS. ADVISORS LP | — | — | view → |
| Date | Insider | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-10-01 | King-Jones Heidy | officer | Option exercise | 28,933 | $14.50 | $420K |
| 2026-10-01 | King-Jones Heidy | officer | Sale | 400 | $89.24 | $36K |
| 2026-10-01 | King-Jones Heidy | officer | Sale | 16,605 | $90.35 | $1.50M |
| 2026-10-01 | King-Jones Heidy | officer | Sale | 7,228 | $91.35 | $660K |
| 2026-10-01 | King-Jones Heidy | officer | Sale | 2,100 | $92.70 | $195K |
| 2026-10-01 | King-Jones Heidy | officer | Sale | 2,600 | $93.46 | $243K |
| 2026-10-01 | Turtle Cameron | director, officer | Sale | 600 | $89.14 | $53K |
| 2026-10-01 | Turtle Cameron | director, officer | Sale | 2,683 | $90.10 | $242K |
| 2026-10-01 | Turtle Cameron | director, officer | Sale | 2,638 | $91.49 | $241K |
| 2026-10-01 | Turtle Cameron | director, officer | Sale | 3,989 | $92.31 | $368K |
| 2026-10-01 | Turtle Cameron | director, officer | Sale | 4,990 | $93.37 | $466K |
| 2026-10-01 | Turtle Cameron | director, officer | Sale | 100 | $93.91 | $9K |
| 2026-10-01 | Burrows Scott L | officer | Option exercise | 7,500 | $14.50 | $109K |
| 2026-10-01 | Burrows Scott L | officer | Sale | 600 | $89.07 | $53K |
| 2026-10-01 | Burrows Scott L | officer | Sale | 1,500 | $90.27 | $135K |
| 2026-10-01 | Burrows Scott L | officer | Sale | 2,100 | $91.92 | $193K |
| 2026-10-01 | Burrows Scott L | officer | Sale | 3,071 | $92.95 | $285K |
| 2026-10-01 | Burrows Scott L | officer | Sale | 229 | $93.57 | $21K |
| 2026-09-30 | Burrows Scott L | officer | Option exercise | 17,500 | $14.50 | $254K |
| 2026-09-30 | Burrows Scott L | officer | Sale | 17,500 | $89.89 | $1.57M |
| 2026-09-02 | King-Jones Heidy | officer | Option exercise | 400 | $14.50 | $6K |
| 2026-09-02 | King-Jones Heidy | officer | Sale | 400 | $90.00 | $36K |
| 2026-09-02 | Burrows Scott L | officer | Sale | 18,232 | $89.35 | $1.63M |
| 2026-09-01 | King-Jones Heidy | officer | Option exercise | 27,999 | $14.50 | $406K |
| 2026-09-01 | King-Jones Heidy | officer | Sale | 4,845 | $86.40 | $419K |
| Settlement | Short Interest | Days to Cover | % Δ vs prior |
|---|---|---|---|
| 2026-10-15 | 12,505,491 | 7.34 | -2.6% |
| 2026-09-30 | 12,844,608 | 8.89 | +5.9% |
| 2026-09-15 | 12,129,443 | 11.58 | +2.3% |
| 2026-08-31 | 11,859,975 | 9.69 | +0.9% |
| 2026-08-14 | 11,755,434 | 15.95 | -3.2% |
| 2026-07-31 | 12,143,879 | 13.52 | -2.9% |
| 2026-07-15 | 12,508,710 | 9.03 | -8.3% |
| 2026-06-30 | 13,640,183 | 5.56 | +8.1% |
| 2026-06-15 | 12,616,535 | 10.83 | -0.1% |
| 2026-05-29 | 12,627,576 | 15.47 | +1.7% |
| 2026-05-15 | 12,417,051 | 10.44 | +1.6% |
| 2026-04-30 | 12,221,682 | 10.04 | +4.7% |
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